Inking mechanism for printing presses



June 9, 1931. H. LANG 1,809,632

INKING MECHANISM on PRINTING PRESSES Filed Aug. 17, 3.939

1 HUBER'I LANG, O

Patented June 9, 1931 PATENT 1? LA GRANGE, ILLINOIS; nssisnon rowan GOSSRINTING PREssoo.. or CHICAGO, rumors, A oonroaarrron or ILLINOIS INKINGMEcHANitsI-u Fort lEB-INTiNG rnnssns Application filed August 17, 1929.Serial No. 386,563.

My invention relates to inking mechanisms for printing presses and ithas for its object theprovisionof a new and improved form andarrangement of parts for transferring i the'ink from the fountain rollerto the adjacent ink drum or other cooperating part. It is one of theobjects of my invention to providea construction of'this type by whichimproved supporting means shall be provided for the oscillating rollerby which the ink is taken from the fountain roller, the arrangementbeing such that the operating parts may be driven at high speeds withoutundue vibration of the parts. To this end, it is one of the objects ofmyinvention to provide supporting means for the oscillating roller of sucharrangement that the roller'is adjustably supported from rigid,stationary supporting means located closely adjacent to the roller forcutting the vibration down tothe minimum and serving to insuresmoothness of operation.

It is one of the objects of my invention to provide a construction bywhich the change 5 in position of the oscillating roller for the desired transfer of the ink may be effected by movement ofthe roller aboutan axis located closely adjacent to the axis about which the oscillatingroller rotates and preferably about an axis located close to thecenterof gravity of the roller, whereby a substantially baiancedmovement maybe had about such axis in contrast to an unbalanced movementabout an axis located at a distance from the center 5 of gravity. It isone of the objects of my invention to prov1de a construction in whichthe bearings serving as the immediate supports for the transfer rollerare themselves mounted so as to have rotary motion about an axisslightly eccentric to the axis of the roller, and to provide means forgiving such bearings oscillatory movements-in timed relation to theoperation of the ink drum for moving the transfer roller between thefountain roller and the ink drum.

justments with respect to the alignment of the transfer roller. It isstill another object of my invention to improvedevices of this type insundry details'hereinafter pointed out.

The preferred means bywhich I have accomplished my several objects areillustrated in the accompanying drawings and are hereinafterspecifically described. That which-I believe to be new and desireto-cover by this application is set forth in the claims.

In the drawingsf- Fig. 1 is a diagrammatic view'showing the relativeposition of the transfer roller between the ink drum and the fountainroller.

Fig. 2 is a view as seen from the right in Fig. 1 but with the inkfountain and roller rem'oved;and I 1 Figs. 3 and 4 are enlarged detailedviews;

being vertical sectional views taken on lines 33 and 1 1 respectivelyofFig. 2.

Referring to the drawings, in which correspondlng parts are indicated bythe same reference'characters, 10 indicates the frame of a printingpress comprising standards in spacedrelation between which an ink drum11 is mounted through the medium of a shaft 12. Adjacent to the ink drum11, I have'provided an ink fountain 13 of any approved type proparts 17;comprises a; shaft or trunnion 18 revolubly mounted in the standards ofthe frame-work 10 said shafts or trunnions 18 being in axial alignmentwith each other.

At their inner ends, themovable bearing parts 17 are provided withtwo-part journal boxes 19in which the shaft 16 of the transfer roller 15is mounted in eccentric positionwith' respect to the trunnions 18.

' As will be readily understood, particularly by reference to thediagrammatic showing in Fig. 1, when the movable bearing parts 17 aregiven rotary movements in unison about the axis of the trunnions 18, thetransfer roller 15 isamoved into contact alternatively with the fountainroller 14 and the ink drum 11, by reason of the eccentricity of themounting of the roller as compared with the mounting of the movablesupporting parts.

For giving the movable supporting parts the desired oscillatory movementin unison, I have provided a rock shaft 20 revolubly mounted between thestandards of the framework 10, such rock shaft 20 having an arm 21fixedly mounted thereon extending toward the movable supporting part 17at one side of the machine and a similar arm 22 mounted loosely on theshaft and extending toward the movable supporting part 17 at the otherside of the machine. For causing the arm 22 to swing about the axis ofthe shaft 20 as said shaft is given a rocking movement from any suitablesource of power, I have provided a bracket 23 fixedly mounted upon. theshaft 20 adjacent to the arm 22, said bracket 23 comprising alongitudinally extending yoke portion at opposite sides of the arm 22set screws 24 carried by the arms of the yoke being adapted by contactwith the arm 22 to hold such arm 22in adjusted position with respect tothe shaft 20and accordingly in adjusted position with respectto the arm21.

Eachof the arms 21 and 22 is provided on its outer end with a segmentalgear 25 which meshes with a segmental gear 26 carried by the adjacentmovable supporting part 17. The arrangement is such that when the rockshaft 20 is given a rotary movement in clockwise direction in Fig. 1,serving to cause the arms 21 and22 to swing toward the right in saidFig. 1, the movable supporting parts 17 are given rotary movement incounter-clockwise direction in said figure, serving to carr the transferroller 15 out of. contact with the fountain rollerl l and into contactwith the inkdrum 11. It will be understood that upon reverse movement ofthe shaft 20, the transfer roller 15 will be moved out of contact, withthe drum again into contact with the,

fountain roller 14.

By the provision of the adjustability through the use of the bracket 23and. set screws 24, the movable supporting part 17 at one side of themachine is adapted to' be given. a slight rotary movement with respectto the movable supporting part 17 at the opposite side of. the machinewhereby the'aligns ment of the transfer roller 15 can be adjustedslightly asv may be required.

By the use of my construction, in which the transfer roller 15 isprovided with rigid supports closely adjacent to the axis of the roller,the transfer roller is made capable of oscillating with considerablerapidity without setting up any undue vibration. By

the use of my construction, a nicely balanced arrangementcan readily beprovided whereby the movement of the transfer roller is effected with amaximum of ease.

While I prefer to employ substantially the form of construction asillustrated in my drawings and as above described, it is to beunderstood that I do not limit the invention to the form of constructionshown except so far as the claims may be so limited by the prior art, itbeing understood that changes may well be made in the form of theconstruction without departing from my invention.

I claim v 1. In an inking mechanism, the combination of an ink fountain,a fountain roller revolubly mounted therein, an ink drum in parallelrelation to said fountain roller at a short distance therefrom, atransfer roller, means for supporting the transfer roller comprisingmovable supporting parts between which said' transfer rolleris'revolubly mounted and rigidly stationary parts by which said movablesupporting parts are revolubly supported. in close proximity to saidtransfer roller on an axis in slightly eccentric position with respectto the axis of the roller, means for adjusting one of said movablesupporting parts circumferentially with respect to the other forchanging the alignment of said transfer roller, and means for givingsaid movable supporting parts rotary movements in unison in alternatelyopposite directions for moving said transfer roller into contactalternately with said ink drum and said fountain roller.

2. In an inking mechanism, the combination of an ink fountain, afountain roller revolubly mounted therein, an ink drum in parallelrelation to said fountain roller at a short distance therefrom, atransfer roller,

y means for supporting the transfer roller comprising movable supportingparts between which said transfer roller is revolubly mounted andrigidly stationary parts by which said movable supporting parts arerevolubly supported in close proximity to said transfer roller on anaxis in slightly eccentric position with respect to the axis of theroller, a rock shaft revolubly mounted a short distance from the axis ofsaid movable supporting parts, and gearing connecting said rock shaftwith the movable supporting parts respectively for giving them rotarymovements in unison in alternately opposite directions for moving saidtransfer roller into contact alternately with said ink drumand saidfountain roller.

3. In an inking mechanism, the combination of an ink fountain, afountain roller revolublymounted therein, an ink drum in parallelrelation to said fountain roller ata short distance therefrom, atransferroller, means for supporting the transfer roller comprising movablesupporting parts between which said transfer roller 'is revolublymounted and rigidly, stationary parts by which said movable supportingpar-ts arerevolubly supported in close proximity to saidtransfer rolleron an axis in slightly eccentric position with respect to the axis ofthe roller, a rock shaft revolubly mounted a short distance from theaxis of said movable supporting parts, segmental gears carried by saidmovable supporting parts respectively, and other segmental gears carriedby said rock shaft and meshing with said first named segmental gears forgiving the movable supporting parts rotary movements in unison inalternately opposite directions for moving said transfer roller intocontact alternately with said ink drum and said fountain roller.

4. In an inking mechanism, the combination of an ink fountain, afountain roller revolubly mounted therein, an ink drum in parallelrelation to said fountain roller at a short distance therefrom, atransfer roller, means for supporting the transfer roller comprisingmovable supporting parts between which said transfer roller is revolublymounted and rigidly stationary parts by which said movable supportingparts are revolubly supported in close proximity to said transfer 25roller on an axis in slightly eccentric position with respect to theaxis of the roller, a rock shaft revolubly mounted a short distance fromthe axis of said movable supporting parts, segmental gears carried bysaid mov- 30 able supporting parts respectively, other segmental gearscarried by said rock shaft and meshing with said first named segmentalgears for giving the movable supporting parts rotary movements in unisonin alter- 35 nately opposite directions for moving said transfer rollerinto contact alternately with said ink drum and said fountain roller,and means for adjusting one of said segmental gears circumferentiallywith respect to the 4.0 other segmental gears for changing the alignmentof said transfer roller.

5. In an inking mechanism, the combination of an ink fountain, afountain roller revolubly mounted therein, an ink drum in par- 5 allelrelation to said fountain roller at a short distance therefrom, atransfer roller, means for supporting the transfer roller comprisingmovable supporting parts between which said transfer roller is revolublymounted and 5s rigidly stationary parts by which said movable supportingparts are revolubly supported in close proximity to said transfer rolleron an axis in slightly eccentric position with respect to the axis ofthe roller an E5 arm mounted in fixed position on said rock shaft andextending toward one of said supporting parts, a second arm mountedadjustably in position on said shaft and extending toward the other ofsaid supporting parts, and segmental gears carried by said arms andmeshing with said first named segmental gears respectively.

HUBERT LANG.

